<?php

empty($var);
empty($expected_array_got_string['some_key']);
empty($expected_array_got_string[0]);
empty($expected_array_got_string['0']);
empty($expected_array_got_string[0.5]);
empty($expected_array_got_string['0.5']);
empty($expected_array_got_string['0 Mostel']);
empty($registry->notExisting);
empty($registry->notExisting->foo);
empty($this->_items[$key]);

if (empty($var)) {
    echo '$var is either 0, empty, or not set at all';
}

function is_blank($value) {
    return empty($value) && !is_numeric($value);
}

if(is_empty(NULL)) {
}


